Ukrainian President Volodymyr Zelenskyy (left) and British Prime Minister Rishi Sunak meet Ukrainian troops being trained to operate Challenger 2 tanks at a military facility in Lulworth, Dorset, England, on Wednesday. Andrew Matthews/Pool via AP hide caption
British Army Challenger 2 tanks are seen at a training ground in Poland on Sept. 21, 2022. This week, Ukrainian soldiers have arrived in the United Kingdom for training on the Challenger 2. Artur Widak/NurPhoto via Getty Images hide caption
U.S. Abrams tanks participate in a live fire demonstration during training exercises in Poland in September 2022. President Biden announced Wednesday that the U.S. will be sending 31 Abrams tanks to Ukraine. Germany also said it will be sending tanks. Omar Marques/Getty Images hide caption
A man plays violin on the sidelines of a religious service held by local residents in front of an apartment building in the Ukrainian city of Dnipro on Sunday. The building was destroyed by a Russian missile strike on Jan. 14. Anatolii Stepanov/AFP via Getty Images hide caption
Two Leopard 2 A6 heavy battle tanks and a Puma infantry fighting vehicle of the Bundeswehr's 9th Panzer Training Brigade participate in a demonstration of capabilities during a visit by then-Defense Minister Christine Lambrecht to the Bundeswehr Army training grounds in February 2022 in Munster, Germany. Sean Gallup/Getty Images hide caption
Ukrainian soldiers patrol on a road in Sydorove, eastern Ukraine, on May 17, 2022. The U.S. is sending Ukraine more advanced rocket systems and munitions in the fourth month of the war. Yasuyoshi Chiba/AFP via Getty Images hide caption
Taiwanese Foreign Minister Joseph Wu speaks Oct. 26 at the Globsec forum in Bratislava, Slovakia, during his visit to Slovakia and the Czech Republic. Vladimir Simicek/AFP via Getty Images hide caption
In this image taken from footage provided by the Ukrainian Defense Ministry Press Service, Ukrainian soldiers use a launcher with U.S. Javelin missiles during military exercises in the eastern Donetsk region of Ukraine, on Jan. 12. The U.S. and NATO allies have been ramping up military aid to help Ukraine fend off Russian forces. Ukrainian Defense Ministry Press Service via AP hide caption
Pallets of aid to Ukraine are stacked behind Secretary of Defense Lloyd Austin (right) and Secretary of State Antony Blinken as they speak with reporters after returning from their trip to Kyiv, Ukraine, and meeting with Ukrainian President Volodymyr Zelensky, on Monday in Poland. Alex Brandon/POOL/AFP via Getty Images hide caption